login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A078130 Numbers having exactly one representation as sum of cubes>1. 5

%I #7 Mar 30 2012 18:50:29

%S 8,16,24,27,32,35,40,43,48,51,54,56,59,62,67,70,75,78,81,83,86,89,94,

%T 97,102,105,108,110,113,116,121,124,125,129,132,133,135,137,140,141,

%U 143,148,149,151,156,157,159,162,164,165,167,170,173,175,178,181,183

%N Numbers having exactly one representation as sum of cubes>1.

%C A078128(a(n))=1.

%C Conjecture: the sequence is finite; is a(63)=218 the last entry?

%H <a href="/index/Su#ssq">Index entries for sequences related to sums of cubes</a>

%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/CubicNumber.html">Cubic Number</a>.

%e 72 is not a term, as 72 = 8+8+8+8+8+8+8+8+8 = 8+64.

%Y Cf. A000578, A078131, A078129, A078136.

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, Nov 19 2002

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 25 16:23 EDT 2024. Contains 371989 sequences. (Running on oeis4.)